rcar_gen3: plat: Add R-Car V3M support

Add R-Car V3M support. This is based on the original
V3M support patch for Yocto v2.23.1 by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
---
Marek: Update on top of mainline ATF/master

plat/renesas/rcar/include/rcar_def.h

@@ -151,6 +151,7 @@
 #define RCAR_CUT_MASK			U(0x000000FF)
 #define RCAR_PRODUCT_H3			U(0x00004F00)
 #define RCAR_PRODUCT_M3			U(0x00005200)
+#define RCAR_PRODUCT_V3M		U(0x00005400)
 #define RCAR_PRODUCT_M3N		U(0x00005500)
 #define RCAR_PRODUCT_E3			U(0x00005700)
 #define RCAR_PRODUCT_D3			U(0x00005800)

plat/renesas/rcar/platform.mk

@@ -30,6 +30,7 @@ RCAR_M3N:=2
 RCAR_E3:=3
 RCAR_H3N:=4
 RCAR_D3:=5
+RCAR_V3M:=6
 RCAR_AUTO:=99
 $(eval $(call add_define,RCAR_H3))
 $(eval $(call add_define,RCAR_M3))
@@ -37,6 +38,7 @@ $(eval $(call add_define,RCAR_M3N))
 $(eval $(call add_define,RCAR_E3))
 $(eval $(call add_define,RCAR_H3N))
 $(eval $(call add_define,RCAR_D3))
+$(eval $(call add_define,RCAR_V3M))
 $(eval $(call add_define,RCAR_AUTO))
 RCAR_CUT_10:=0
 RCAR_CUT_11:=1
@@ -160,6 +162,22 @@ else
       endif
       $(eval $(call add_define,RCAR_LSI_CUT))
     endif
+  else ifeq (${LSI},V3M)
+    RCAR_LSI:=${RCAR_V3M}
+    ifndef LSI_CUT
+      # enable compatible function.
+      RCAR_LSI_CUT_COMPAT := 1
+      $(eval $(call add_define,RCAR_LSI_CUT_COMPAT))
+    else
+      # disable compatible function.
+      ifeq (${LSI_CUT},10)
+        RCAR_LSI_CUT:=0
+      endif
+      ifeq (${LSI_CUT},20)
+        RCAR_LSI_CUT:=10
+      endif
+      $(eval $(call add_define,RCAR_LSI_CUT))
+    endif
   else
     $(error "Error: ${LSI} is not supported.")
   endif